After blast, Texas to unveil database of hazardous chemicals

From Joe Sutton, CNN

Updated 4:31 PM ET, Tue June 18, 2013

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Photos:Photos: Texas fertilizer plant explodes

Texas fertilizer plant explodes – Forensic mappers work the crater at the site of a fire and explosion in West, Texas, on April 24, 2013. The West Fertilizer Co. plant in the small Texas town exploded days earlier on April 17, killing 15 people.

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Photos:Photos: Texas fertilizer plant explodes

Texas fertilizer plant explodes – Agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives search the bank of rail tracks for evidence at the site of the explosion.

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Photos:Photos: Texas fertilizer plant explodes

Texas fertilizer plant explodes – Search and rescue workers comb through what remains of a 50-unit apartment building, in foreground, and a nursing home on April 18, 2013.

Authorities haven't publicly determined what caused the deadly situation, saying it could have started from a spark from a golf cart, an electrical short or could have been set intentionally. In May, authorities announced they had launched a criminal investigation into the case, though no one has been charged.